Which of the following is one of the basic principles of social stratification?
a. low-level groups often have basic access to the rewards and privileges of higher-level groups.
b. it is maintained through beliefs that are widely shared in a society.
c. all societies stratify according to wealth accumulation.
d. families’ social positions start anew with each new generation.

The correct answer is option b. "It is maintained through beliefs that are widely shared in a society".

Explanation:

Social stratification is a people's differentiation according to its socioeconomic strata, directly affected by its wealth and social status. One of the principles of social stratification is that it is maintained through beliefs that are widely shared in a society. The existence of the different strata is maintained by people's believing in them, as people is rise with the idea of its existence and this idea is passed from generation to generation.

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.